og 7.x-2.6

Major Changes since 7.x-2.5:

• #2216819 by shushu, richard.thomas: OgBehaviorHandler validate method removes errors for other fields.
• #2141101 by czigor, alesr: Plain core select widget does not work for group audience fields.
• #2169099 by Amitaibu, ezra-g: Avoid unnecessary entity loads in group reference fields.

Changes since 7.x-2.5:

• #2199423 by RoySegall: Missing og-missing-asterisk on og_update_7205().
• #2200761 by Amitaibu: Assert entity ID is a group in og_context_handler_url().
• #2195285 by joachim: Incorrectly labelled hook implementation: hook_query_QUERY_TAG_alter.
• #2182675 by joachim: Badly named variable in og_views_data_alter().
• #2143725 by shushu | alieffring: Og_access_node_access_records merges arrays with the + operator instead of array_merge_recursive().
• #2134377 by japerry | ezra-g: Add an index to og_membership on group_type.